The players who protected Peyton Manning's blindside over his first 13 years in Indianapolis will not be confused with the greats of the game.

Unheralded Tarik Glenn did make three Pro Bowl appearances over his 10 seasons. The players who followed Glenn — Tony Ugoh and Charlie Johnson — were better known not so much for winning the left tackle job as taking it by default.

So, when Manning was asked Thursday if he's even the least bit nervous about the prospect of his blindside being covered for the rest of this season by fifth-year journeyman Chris Clark instead of three-time Pro Bowler Ryan Clady, the Broncos quarterback barely waited for the question to finish.